How do I become prettier/more androgynous and feminine looking?

Ok 18 year old guy about to make the move to LA to pursue an acting career. I am about 6'1, white skin, shaggy dark brown hair, light green eyes, prominent eyebrows, and fairly thin. Most actors my age in hollywood are very girly looking like- Zac Efron, Robert Pattinson, The Jonas Brothers, and many other not as well known stars. What can I do to become prettier? Ideas?